爱华网使用HttpClient：
NameValuePair nameValuePair1 = newBasicNameValuePair("name","yang");
NameValuePair nameValuePair2 = newBasicNameValuePair("pwd","123123");
List nameValuePairs = new ArrayList();
nameValuePairs.add(nameValuePair1);
nameValuePairs.add(nameValuePair2);
String validateURL = "http://10.0.2.2:8080/testhttp1/TestServlet";
try {
HttpParams httpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams,5000);//设置连接超时为5秒
HttpClient client = newDefaultHttpClient(httpParams);//生成一个http客户端发送请求对象
HttpPost httpPost = newHttpPost(urlString);//设定请求方式
if (nameValuePairs!=null&& nameValuePairs.size()!=0){
//把键值对进行编码操作并放入HttpEntity对象中
httpPost.setEntity(newUrlEncodedFormEntity(nameValuePairs,HTTP.UTF_8));
}
HttpResponsehttpResponse =client.execute(httpPost);// 发送请求并等待响应
//判断网络连接是否成功
if (httpResponse.getStatusLine().getStatusCode()!= 200) {
System.out.println("网络错误异常！!!!");
returnfalse;
}
HttpEntity entity = httpResponse.getEntity(); // 获取响应里面的内容
inputStream = entity.getContent(); //得到服务气端发回的响应的内容（都在一个流里面）
//得到服务气端发回的响应的内容（都在一个字符串里面）
//String strResult =EntityUtils.toString(entity);
}catch (Exception e) {
System.out.println("这是异常！");
}
使用HttpURLConnection：
String validateURL="http://10.0.2.2:8080/testhttp1/TestServlet?name=yang&pwd=123123";
try {
URL url = new URL(validateUrl);//创建URL对象
//返回一个URLConnection对象，它表示到URL所引用的远程对象的连接
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setConnectTimeout(5000); //设置连接超时为5秒
conn.setRequestMethod("GET"); //设定请求方式
conn.connect(); //建立到远程对象的实际连接
//返回打开连接读取的输入流
DataInputStreamdis = newDataInputStream(conn.getInputStream());
//判断是否正常响应数据
if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
System.out.println("网络错误异常！!!!");
returnfalse;
}
} catch (Exception e) {
e.printStackTrace();
System.out.println("这是异常！");
} finally {
if (conn !=null) {
conn.disconnect();//中断连接
}
}
